Table 2

Determinants of number of symptoms at follow-up, multivariable negative binomial regression analysis (n=434)

	N	Incidence rate ratio	95% CI	P value
Age*	434	0.94	0.82 to 1.07	0.36
Sex
Female†	243	1
Male	191	0.74	0.53 to 1.03	0.072
Marital status
Single/separated/divorced†	92	1
Married/cohabiting	325	0.89	0.60 to 1.31	0.55
Widowed	17	0.56	0.22 to 1.46	0.24
Highest attained education
<11 years (Compulsory school)†	37	1
11–13 years (Secondary school)	162	0.87	0.49 to 1.54	0.62
>13 years (University)	235	0.83	0.47 to 1.46	0.52
Smoking status
Never smoker†	286	1
Former/current smoker	148	1.16	0.83 to 1.62	0.40
No. of 21 comorbidites
0†	218	1
1	122	1.52	1.02 to 2.25	0.038
≥2	94	2.52	1.58 to 4.02	<0.001
No. of 23 COVID-19 symptoms
0–5†	99	1
6–9	167	1.97	1.20 to 3.23	0.007
10–23	168	4.16	2.57 to 6.72	<0.001
Body mass index, kg/m²	434	0.99	0.97 to 1.02	0.63
Time from onset of symptoms, days
41–110	143	1.27	0.86 to 1.87	0.24
111–127	152	1.26	0.85 to 1.86	0.25
128–193*	139	1